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| author |  Adam Chlipala <adamc@hcoop.net> | 2009-09-08 10:18:19 -0400 |
|---|---|---|
| committer | Adam Chlipala <adamc@hcoop.net> | 2009-09-08 10:18:19 -0400 |
| commit | d07c91bf275874a5f6f13af5f338def78eea7ae0 (patch) | |
| tree | 700a022259cb238d022c76cb0b6c30fb44985aed /demo/more/dragList.ur | |
| parent | 815c52605cdba3c95d7e4e6fd3f1eddf0939bc6a (diff) | |
dragList almost kinda works
Diffstat (limited to 'demo/more/dragList.ur')
| -rw-r--r-- | demo/more/dragList.ur | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/demo/more/dragList.ur b/demo/more/dragList.ur new file mode 100644 index 00000000..ddb50e82 --- /dev/null +++ b/demo/more/dragList.ur @@ -0,0 +1,33 @@ +fun draggableList title items = + itemSources <- List.mapM source items; + draggingItem <- source None; + return <xml> + <h2>Great {[title]}</h2> + <ul> + {List.mapX (fn itemSource => <xml> + <li onmousedown={set draggingItem (Some itemSource)} + onmouseup={set draggingItem None} + onmouseover={di <- get draggingItem; + case di of + None => return () + | Some di => item1 <- get di; + item2 <- get itemSource; + set di item2; + set itemSource item1}> + <dyn signal={s <- signal itemSource; return <xml>{[s]}</xml>}/> + </li></xml>) itemSources} + </ul> + </xml> + +fun main () = + bears <- draggableList "Bears" ("Pooh" :: "Paddington" :: "Rupert" :: "Edward" :: []); + beers <- draggableList "Beers" ("Budvar" :: "Delirium Tremens" :: "Deuchars" :: []); + boars <- draggableList "Boars" ("Sus scrofa scrofa" + :: "Sus scrofa ussuricus" + :: "Sus scrofa cristatus" + :: "Sus scrofa taiwanus" :: []); + return <xml><body> + {bears} + {beers} + {boars} + </body></xml> |